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Short-term toxicity to aquatic invertebrates

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Description of key information

The toxicity of OTNE towards Lepomis macrochirus was investigated according to methodology comparable to OECD Guideline 203 under GLP. Fish were exposed to water accommodated fractions (WAF) of 14C-labelled OTNE with nominal concentrations of 0.50, 0.75, 1.1, 1.7 and 2.5 mg/l in a semi-static system and observed for 96 hours. Validity criteria for the test were met. The 96h-LC50 was found to be 1.3 mg/l (95% CL 1.2 - 1.5 mg/l) based on mean measured concentrations.               

The toxicity of OTNE towards Daphnia magna was investigated according to a protocol similar to OECD Guideline 202, under GLP. Daphnia were exposed to water accommodated fractions (WAF) of 14C-labeled OTNE with nominal concentrations of 0.50, 0.75, 1.1, 1.7 and 2.5 mg/l in a semi-static system and observed for 48 hours. Validity criteria for the test were met. The 48h-EC50 was found to be 1.38 mg/l (95% CL 1.32 -1.44 mg/l) based on mean measured concentrations.

           

The toxicity of OTNE towards Daphnia magna was investigated according to a protocol similar to OECD Guideline 202, under GLP. Daphnia were exposed to water accommodated fractions (WAF) of 14C-labeled OTNE with nominal concentrations of 0.50, 0.75, 1.1, 1.7 and 2.5 mg/l in a semi-static system and observed for 48 hours. Validity criteria for the test were met. The 48h-EC50 was found to be 1.38 mg/l (95% CL 1.32 -1.44 mg/l) based on mean measured concern.

   

The toxicity of OTNE towards Daphnia magna was investigated according to a protocol similar to OECD Guideline 202, under GLP. Daphnia were exposed to water accommodated fractions (WAF) of 14C-labeled OTNE with nominal concentrations of 0.50, 0.75, 1.1, 1.7 and 2.5 mg/l in a semi-static system and observed for 48 hours. Validity criteria for the test were met. The 48h-EC50 was found to be 1.38 mg/l (95% CL 1.32 -1.44 mg/l) based on mean measured concentrations.

 

The toxicity of OTNE towards Daphnia magna was investigated according to a protocol similar to OECD Guideline 202, under GLP. Daphnia were exposed to water accommodated fractions (WAF) of 14C-labeled OTNE with nominal concentrations of 0.50, 0.75, 1.1, 1.7 and 2.5 mg/l in a semi-static system and observed for 48 hours. Validity criteria for the test were met. The 48h-EC50 was found to be 1.38 mg/l (95% CL 1.32 -1.44 mg/l) based on mean measured concentrations.

     

The toxicity of OTNE towards Daphnia magna was investigated according to a protocol similar to OECD Guideline 202, under GLP. Daphnia were exposed to water accommodated fractions (WAF) of 14C-labeled OTNE with nominal concentrations of 0.50, 0.75, 1.1, 1.7 and 2.5 mg/l in a semi-static system and observed for 48 hours. Validity criteria for the test were met. The 48h-EC50 was found to be 1.38 mg/l (95% CL 1.32 -1.44 mg/l) based on mean measured concentrations.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
1.38 mg/L

Additional information